We alwhays did a tall fake tree so no nasty needles for babies and then only the top half was decorated !! It was in a tub weighted down with padded wrapped bricks I think? It looked well silly , but did the job, it didn't move, fall and no bits of baubles or chocky was taken / broken / eaten!
I have a changing table in the corner of my lounge, maybee I will put mine up on there , and change him on the floor again for a month (only keeping change table in my cramped lounge at mo cause my best mate has been TTC for about 3 years since her 3 mth MC, and she really wants it, but is superstitous , naturally).
It's a shame that the presssies won't be able to go under tree in december , we went back to doing that when kids got older and now Devon is here, he will open / rip all the pressies again!